body {
  margin: 0;
  padding: 0;
  width: 280px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    'Helvetica Neue', Arial, 'Noto Sans', 'PingFang SC', 'Microsoft YaHei',
    sans-serif;
}

.container {
  padding: 16px;
}

.title {
  font-size: 16px;
  margin: 0 0 8px;
  color: #1a1a1a;
}

.desc {
  font-size: 13px;
  margin: 0 0 12px;
  color: #555;
}

.btn {
  display: inline-block;
  width: 100%;
  padding: 10px 12px;
  border: none;
  border-radius: 8px;
  background: #2ecc71;
  color: #fff;
  font-size: 14px;
  cursor: pointer;
}

.btn:hover {
  background: #27ae60;
}

.btn:active {
  background: #1e8449;
}